Sanford Lab infrastructure technician Bill Heisinger uses a jackleg drill to drill holes in the shaft wall for the dedication plaque Monday, June 22, 2009, during a ceremony dedicating the Sanford Underground Science and Engineering Laboratory at the former Homestake Gold Mine in Lead, S. D. Looking on are, from the left, technician Alvin Burns; Ron Wheeler, executive director of the South Dakota Science and Technology Authority; businessman and philanthropist T. Denny Sanford, who has pledged $70 million to the project; and Dr. Ken Lande, a physicist at the University of Pennsylvania who worked for decades on a solar neutrino detector that had been installed at the 4,850-foot level of the former mine. Lande was one of the first to suggest converting Homestake in a national underground laboratory. AP Photo logo AP Photo 5 months ago

Sanford Lab infrastructure technician Bill Heisinger uses a jackleg drill to drill holes in the shaft wall for the dedication plaque Monday, June 22, 2009, during a ceremony dedicating the Sanford Underground Science and Engineering Laboratory at the former Homestake Gold Mine in Lead, S. D. Looking on are, from the left, technician Alvin Burns; Ron Wheeler, executive director of the South Dakota Science and Technology Authority; businessman and philanthropist T. Denny Sanford, who has pledged $70 million to the project; and Dr. Ken Lande, a physicist at the University of Pennsylvania who worked for decades on a solar neutrino detector that had been installed at the 4,850-foot level of the former mine. Lande was one of the first to suggest converting Homestake in a national underground laboratory.

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